| 4501 | Suburban Propane Expl Co, Inc. | | Oil & Gas Operator | Jun 1983 |
| 4502 | Suburban Propane Gas Corp. | | Oil & Gas Operator | Sep 1980 |
| 4503 | Sue-Ann Operating, L.C. | Victoria, TX 77903 | Oil & Gas Operator | Feb 2026 |
| 4504 | Sugar Bowl Gas Corp. | | Oil Operator | Dec 1983 |
| 4505 | Sugar Bowl Industrial Gas Corp | | Oil Operator | Dec 1983 |
| 4506 | Sugar Creek Environmental, LLC | | Oil Operator | Jan 2025 |
| 4507 | Sugar Creek Producing Company | | Oil & Gas Operator | Dec 2010 |
| 4508 | Sugar Creek Producing Company, LLC | | Oil & Gas Operator | Jan 2025 |
| 4509 | Sugar Oil Company | | Oil & Gas Operator | Feb 2011 |
| 4510 | Sullivan Well Service | | Oil Operator | Mar 2010 |
| 4511 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Feb 2026 |
| 4512 | Summit Energy Company | | Oil & Gas Operator | Mar 2009 |
| 4513 | Summit Energy,Inc | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 4514 | Summit Gas LLC | | Oil & Gas Operator | Oct 2011 |
| 4515 | Summit Oil & Gas, LLC | | Oil & Gas Operator | Nov 2024 |
| 4516 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Nov 2025 |
| 4517 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 4518 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 4519 | Sun Exploration And Production Co | | Oil & Gas Operator | Jan 1990 |
| 4520 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2024 |
| 4521 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 4522 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Dec 2025 |
| 4523 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 4524 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 4525 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 4526 | Sundance Energy Corporation | | Oil & Gas Operator | Jan 2025 |
| 4527 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Feb 2026 |
| 4528 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 4529 | Sunex Production, Inc. | | Gas Operator | Mar 1988 |
| 4530 | Sunex Resources Incorporated | | Oil Operator | Dec 1981 |
| 4531 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2025 |
| 4532 | Super Energy Inc. | | Oil & Gas Operator | Oct 1993 |
| 4533 | Superior - Austral | | Oil & Gas Operator | Mar 1978 |
| 4534 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
| 4535 | Superior Operating LLC | | Oil Operator | May 2020 |
| 4536 | Superior Resources Corporation | | Oil Operator | Apr 2006 |
| 4537 | Superior-American Quasar | | Oil & Gas Operator | Jan 1981 |
| 4538 | Superior-Tenneco | | Oil & Gas Operator | Jun 1982 |
| 4539 | Sutton Joint Account | | Oil Operator | Mar 1988 |
| 4540 | Sutton-Gerard Et Al | | Oil & Gas Operator | Jan 1990 |
| 4541 | Sutton-Gerard-Sawyer | | Oil & Gas Operator | Jan 1990 |
| 4542 | Sutton-Sawyer | | Oil Operator | Mar 1989 |
| 4543 | SV Energy Company, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2017 |
| 4544 | SW Associates | | Oil & Gas Operator | Dec 1985 |
| 4545 | Swag Oil And Gas Company, Inc. | | Oil & Gas Operator | Jul 1982 |
| 4546 | Swampfox Oilfield Services, LLC | | Oil & Gas Operator | Dec 2024 |
| 4547 | Swan Lake Properties, Inc. | | Oil Operator | Jul 1987 |
| 4548 | SWD Acidizing, Inc. | | Oil Operator | Feb 2014 |
| 4549 | SWD, Inc. | | Oil Operator | Jan 2025 |
| 4550 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 4551 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 4552 | Swift Energy Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2017 |
| 4553 | SWN Production (Louisiana), LLC | | Oil & Gas Operator | Dec 2024 |
| 4554 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Dec 2025 |
| 4555 | Sydson D'Oro Exploration Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 4556 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Feb 2026 |
| 4557 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 4558 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 4559 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
| 4560 | T & F Oil Company | | Oil Operator | Jan 2025 |
| 4561 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 4562 | T & L Oil Production | | Oil Operator | Jan 2025 |
| 4563 | T & L Production Company | | Oil Operator | Feb 1984 |
| 4564 | T & M Gauging | | Oil Operator | Oct 2006 |
| 4565 | T H Production Co. | | Oil & Gas Operator | Mar 1994 |
| 4566 | T, F & B Oil Company, LLC | | Oil Operator | Jan 2013 |
| 4567 | T-M Well Service | Jefferson, TX 75657 | Oil & Gas Operator | Sep 2004 |
| 4568 | T-M Well Service, L.L.C. | Jefferson, TX 75657 | Oil & Gas Operator | Dec 2024 |
| 4569 | T-R Oil | Mapleton, KS 66754 | Oil & Gas Operator | May 2018 |
| 4570 | T. And M. Production | Oil City, LA 71061 | Oil & Gas Operator | Feb 2026 |
| 4571 | T. C. Morrow Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 4572 | T. D. Tedder | | Oil Operator | Dec 1991 |
| 4573 | T. J. Guido | | Oil & Gas Operator | Oct 1998 |
| 4574 | T. J. Lundy | | Oil Operator | Jan 2025 |
| 4575 | T. J. Operating Co., Inc. | | Oil & Gas Operator | Aug 1998 |
| 4576 | T. L. James & Co., Inc. | | Oil & Gas Operator | Oct 1992 |
| 4577 | T. M. Hopkins | | Oil & Gas Operator | Aug 2007 |
| 4578 | T. N. T. Energy Co. | Belcher, LA 71004 | Oil Operator | May 1991 |
| 4579 | T. N. T. Inc. | | Oil & Gas Operator | Jan 1987 |
| 4580 | T. N. T. Tribal - Luffey | | Gas Operator | Oct 1994 |
| 4581 | T. O. Kimbrell, LLC | | Oil & Gas Operator | Dec 2025 |
| 4582 | T. W. McGuire & Associates, Inc. | | Oil & Gas Operator | Nov 2018 |
| 4583 | T. West Bullock, SR. | | Oil & Gas Operator | Mar 1989 |
| 4584 | T.B. Lanford Et Al | | Oil Operator | Apr 1987 |
| 4585 | T.O. Greer Productions | | Oil & Gas Operator | Aug 2013 |
| 4586 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 4587 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 4588 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
| 4589 | Tabco Producing Co. | | Oil & Gas Operator | Jan 1998 |
| 4590 | Tadlock Properites | | Oil & Gas Operator | Jan 1994 |
| 4591 | Taggart Oil Co., Inc. | | Oil Operator | Oct 1992 |
| 4592 | Tahoe Corporation | | Gas Operator | Feb 2023 |
| 4593 | Talco Midstream Assets, LTD. | | Oil Operator | May 2017 |
| 4594 | Talley Resources, Inc. | Houma, LA 70360 | Oil & Gas Operator | Apr 1993 |
| 4595 | Tallgrass Production Company LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2014 |
| 4596 | Talon Energy LLC | | Gas Operator | Jan 2020 |
| 4597 | Talos Energy Offshore LLC | | Oil & Gas Operator | Jan 2025 |
| 4598 | Talos Ert LLC | | Oil & Gas Operator | Jan 2025 |
| 4599 | Talos Gulf Coast Onshore LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 4600 | Talos Third Coast LLC | | Oil & Gas Operator | Dec 2024 |